Authenticated Firmware Download; Power Requirements; Supported Commands; Sanitize - Cryptographic Erase - Seagate ST400FM0323 Product Manual

8.7

Authenticated firmware download

In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts
download files which have been cryptographically signed by the appropriate Seagate Design Center.
Three conditions must be met before the drive will allow the download operation:
1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.
2. The download file must be signed and authenticated.
3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it must be applicable to
the correct drive model, and have compatible revision and customer status.
8.8

Power requirements

The standard drive models and the SED drive models have identical hardware, however the security and encryption portion of the
drive controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about
30mA and a commensurate increase of about 150mW in power consumption. There is no additional drain on the 12V supply. See the
tables in Section 6.2.1 for power requirements on the standard (non-SED) drive models.
8.9

Supported commands

The SED models support the following two commands in addition to the commands supported by the standard (non-SED) models as
listed in Table 15:
• SECURITY PROTOCOL OUT (B5h)
• SECURITY PROTOCOL IN (A2h)
8.10

Sanitize - Cryptographic Erase

This command cryptographically erases all user data on the drive by destroying the current data encryption key and replacing it with
a new data encryption key randomly generated by the drive. Sanitize CRYPTOGRAPHIC ERASE is a SCSI CDB Op code 48h and
selecting the service action code 3 (CRYPTOGRAPHIC ERASE).
8.11

RevertSP

SED models will support the RevertSP feature which erases all data in all bands on the device and returns the contents of all SPs
(Security Providers) on the device to their original factory state. In order to execute the RevertSP method the unique PSID (Physical
Secure ID) printed on the drive label must be provided. PSID is not electronically accessible and can only be manually read from the
drive label or scanned in via the 2D barcode.
Seagate 1200.2 SAS SSD Product Manual, Rev. A 52